2. 金融经济
  3. It’s disturbing to note how many of the crimes we do know about were detected...

It’s disturbing to note how many of the crimes we do know about were detected...

admin2020-12-24  9
问题 It’s disturbing to note how many of the crimes we do know about were detected ___not by systematic inspections or other security procedures.
选项 A. by accident
B. on schedule
C. in general
D. at intervals
答案A
解析by accident“偶然”；on schedule“按时”；in general“通常，大体上”；at intervals“不时”。根据句子结构，所填词与by systematic inspections or other security procedures是对称的，by accident 符合要求。
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